Machine for inserting fastenings.



APPLICATION FILED SEPT. 3, 1908.

Patented 001;. 21', 1913.

3 SHEETS-SHEET 1.

MT/VESSZ'S.

G. GODDU. MACHINE FOR INSERTING FASTENINGS.

APPLIOATIOY FILED S BPT. 3, 1908.

a SHEETS-SHEET 2.

Fig. 2. WLMQ 7% %mm m 2 m 6 S E 0, m 1

G. GODDU.

MACHINE FOR INSERTING FASTENINGS;

APPLICATION PILED'SEPT. 3, 1908.

Patented Oct. 21, 19-13.

3 SHEETB-BHEET 3.

Mm'mm UNITED sTArEs PA TlilNT oF-nion- GEGRGE GODDU, OF"WING'HESTER, MASSACHUSETTS, ASSIGNUR' TO UNITED SHOE MACHINERY COMPANY, OF IA'JFEIUSOIQ', JERSEY. Al CORPORATION OF NEW JERSEFQ:

JVIACHINE' FOR IWSEB'DING FASTENINGS;

Specification of Letters Iatent.

Patented one. 21', 1913;

To all whom it may concern Be it known that I, GEORGE GODDU, a citizen of the United States, residing at Win ehester; in the county of Middlesen and Commonwealth of Massachusetts, have in rented certain IIn rove nents-in Machines for InsertingE'astenings, of which the follewiiig deseription,- in connection with theaccompanying drawings, is a Specification,

,. like reference characters on the drawings tend ant upon the use of such machines,"such,

for example, as uniformity-andrapidity ofoperation and convenience of! manipulation. of the work while the fastening'is being inserted, have beenunattainable to the small 5 manufacturer: or to the repair man who had no source of power from which such a ma chine could be driven: The present inveh tion aims therefore-:to provide a machine which is inexpensive to manufacture,;which is eliicient in operation and which will sup: ply to the small manufacturer or to the proprietor of a repair shop-means for mechanically inserting fastenings that may be man ually operated,

Although the invention aims primarily to provide a machine which may be ma'nually operated it will be noted from-a consideration the construction herein disclosed that many of the novel principles of operation which characterize the present invention may lieutilized to advantage in powerdriven machines.

In the accompanying drawings, Figure l is a perspective view of a machine embodying this invention, a portion of the standard being broken away in order that the more essential features may be illustrated upon a larger scale; Fig. 2 is a side elevation of tiie machine lil'ustrated in Fig. 1, the parts being shown inoperative relation toeach other and the driver being-shown as'raised into its-uppermost position and about to be relea ed to drive a fastening; Fig t; is a detail view of the raceway-actuating mechaiism; is a detaitsectional view Show ing the fastening raceway in its fasteningdelivering position; Fig-Q 5 shows the raceway in the position in which it rests temporarily before having imparted toit by its actuating mechanism a; sudden movement fanto fasteningreceiving position; Fig, 6 is a detail sectional view showing the fastening raceway in its fzisteningreceiving position, and showing the operation of the shank pushing attachment upon said raceway; Fig. 7 is a perspective view, 'partly in sec,- tion, of the fastening supportin ledgefad jacentto the driver passage an "of the ad jacent end, of the fastening racew y;'Fig. 8 1s a transverse section through 't ie' lower art of the fastening container and through the fastening raceway; Fig. 9 shows the fnovel forth of -edge gage used in this machine in the twopositions to which it may readily be moved; and Fig. 1O shows a bottom-supporting gage, and the manner of using it to obtain a straight line of fastenings across a shoe sole. v

. In the lower part of a base or standard is fulcrumed 315.4 a treadle lever, fi-which constitutes, in the illustrated embodiment of the invention, the manually operated means ,t'or actuating the various mechanisms hereinafter to be described. The -illi1strated treadle lever is arranged to operate a" leyer of the second class, and the end adapted to be engaged'by the foot ofthe operatoris maintained. normally in, its uppermost position'by aspring 8 connected at one end to said lever and at its other end to the standnrd Q.

Pivoted upon the upper end of the stand ard 2 is a head 10 maintained normally in its uppermost position by a spring 12 resting-at one end, ina socket 14 in the head 10 and at its other man a socket 16 in the standard The head 10 is arranged to be turned about its pivot work clampin g relation to a piece of work supported upon any suitable work support, such, forexample, as a horn-l8 rotatable about a center coinciding substantially with the center of its ti ht its forward end the head lO is provided with a driver passage 20 enlarged. at its upper end to receive a driver bar 22, to which the driver 21 is attached said bar 'being'arranged' to be de ressed by agsprging 2% to' effect the driving of a fastening after it has been lifted against the tension of said I ing a fastening which is to be driven into comparatively hard work would be especlally (llll'lCHlt to control 111 such a manner that the spring by means hereinafter to be described. The driver bar 22 has adjustably fastened upon its upper end a head 26 which limits the descent of the driver by engaging a cushion 28 surrounding the driver passage 20 at its upper end and which is also provided with a depending lug 30 adapted to be engaged by a driver-lifting pawl 32 pivoted to turn about a center corresponding with the center of a boss 34 upon the forward end of a lever 36 attached to a rockshaft 38 mounted in hearings in the head 10.

A spring 40, surrounding the boss 34 and bearing at one end against a lug 42 upon the pawl 32 and at its other end against :1 lug 44 upon the lever 36, presses said pawl normally toward the lug 30 upon the head 26, a lip 46 upon the pawl 32 limiting the movement of the pawl toward the driver.

The pawl 32 is provided with a tail 48 arranged to engage a pawl-tripping lug 50 upon an upstanding portion 52 of the head 10 when the driver bar 22 has been raised by said pawl into its uppermost position, whereby the pawl is turned about its pivot into the position shown in dotted lines in Fig. 2, thus releasing the driver bar 22 and permitting it to be depressed by the spring 24. to effect a fastening-driving operation. The spring 24 is confined by a set screw 54 in a socket in the upper end of the upstanding portion 52 of the head 10.

The lever 36 and rock-shaft 38 are turned in a direction to cause the pawl 32 to lift the driver bar 22 by a rod 56 connected at one end to the other arm of the lever-36 andat its other end to the treadle lever 6. The fulcrum of the lever 36, which, in this instance, is the bearing for the rock'shaft 38, is located between the pivot of the head 10 and the driver bar 22, so that when the'lever 36 starts to turn in the direction to lift the driver bar 22 the resistance of the spring 24 to the lifting of the driver, acting through the bearing of the rock-shaft 38, tends to depress the forward end of the head 10 against the tendency of the spring 12 to maintain it in its uppermost position and the relative strengths of the springs 24 and 12 are such that, with the leverage obtained by the relafive locations of the pivot of the head 10, the spring 12 and the bearing of the rockshaft 38, the forward end of he head will be depressed into contact with the upper surface of the work supported upon the horn 18 before the driver bar 22 will be lifted to any substantial extent.

Since the spring 24 is mounted upon the head 10 in such a position that any force imforward end in an upward considerable leverage upon the head,and since a sudden force like that caused by rebound of the driver upon strikhead would hold the work properly clamped if the spring were arranged to follow the driver bar throughout its movement, it is preferable that the impelling force of the spring cease before the driver reaches its lowermost position, and therefore, in the illustrated construction. the driver is arranged to travel through the last part of its driving movement under its acquired momentumfthe head 26 the driver bar being provided with lugs 58 and (30 between which the forward end of the driver spring 24 is confined and guided In orde further to prevent the release of the work by the head at the time the fastening is driven, means is provided for effecting substantially a positive clamping of the work just at this time. As hereinbefore pointed out, the initial clamping of the work is differentially effected during the lifting of the driver against the tension of its spring 24. As the driver will always be released at the same point in the angular movement of the lever 3,6, a pin (52 has been provided upon the upper end of upon the upstanding portion 52 of the head 10, withwhich the ver,36 engages, just at the time when the pawl 32 releases the driver bar 22, so that the downward pull-of the rod 56 connected with the treadleG will be applied directly to the head 10 through the bearing of the rock-shaft 38. The head Will thus be prevented from rising to release the work at the time the fastening is driven.

The machine herein illustrated is arranged to drive headed fastenings of the type commonly called loose nails, and these nails are placed in a fastening container or nail pot 64 attached to the side of the head 10 and having a bottom inclined toward said side. The back part of the nailpot 64 is formed upon the are of a circle, and pivoted in the head 10, so that it oscillates up and down-along the inner side of the pot, is a segmentshaped plate 66 having attached to, or formed in, its upper edge a fastening raceway 68 adapted to receive fastenings when in the pot and to in its lowermost position be inclined as the segment-shaped plate 66 oscillates into its uppermost position, so that the fastenings slide down it until the end most fastening comes in contact with the driver 21, the driver passage being formed adjacent to the end of the raceway with a fastening-receiving opening.

As shown, especially in Figs. 4, 5, 6 and 7, the fastening-receiving opening in the driver passage is provided with a ledge 70 inclined downward toward the driver passage and adapted to support by its head a single nail as it is delivered to it by the inclination of the raceway. The segment plate 66 is at- I tached at its center of oscillation to a rockshaft 72 mounted in bearings in the head 10, and rocking movement is imparted to said rock-shaft through connections to the rockshaft 38. The illustrated connections comprise an arm 74 rigidly attached to the rockshaft 38 and having a pin 76 bearing against a spring 78 in a slot in one end of a link 80 connected at its other end to an arm 82 rigidly attached to the rock-shaft 7'2.

Loosely carried upon the rock-shaft 38 is a catch St having a hooked end 86 arranged to engage, when the parts are in proper positi 1, a notch 88 in the link 80. \Vhen the parts are in the position shown in Fig. 1, the hooked end 86 of the latch S4 will lie somewhat in front of the notch 88 in the link 80, or to the right of said notch as shown in this figure, and, as the rock-shaft 38 is turned to etl'ect a lifting of the driver bar 22, the pin 76 upon the arm 74 will press against the spring 78 in the slot in the link 80 and move the link in a forward direction, thereby causing the arm 82 to turn the rock-shaft 72 in a clockwise direction in Fig. 3, whereby the raceway 68 is moved toward the bottom of the nail pot 64.

Before the raceway reaches its lowermost position with respect to the nail pot 64, the hook 86 upon the latch 84 will engage the notch 88 in the link 80 and thus prevent the forward movement of the link under the pressure of its spring 78, and the spring will further be compressed in the slot by the action of the pin 76 upon its rearmost end. After the spring has been compressed to a certain extent, an extension 90 upon the arm '74 will engage a. pin 92 upon the latch (A and lift the hook 80 out of the notch 88. thus releasing the stored-up energy in the spring 78 whereby the link 80 is suddenly moved forward and the last part of the nniveruent of the raceway into its lowermost position will be ctl'ected suddenly, so that the parts associated with it will be jarred considerably. This movement of the raceway which preferably brings the lower edge of the regment plate (36 into engagement with the portion of the head '10 in which the driver passage 20 is formed will aid in jarring the nail resting upon the ledge 70 .into the driver passage and will serve also to shake down nails in the nail pot so that the raceway may receive a new supply for the next fastening-delivering operation.

As hereinbet'ore pointed out, the ledge 70 is inclined downwardly toward the driver passage so that when the head of the nail rests upon it the shank of the nail has a tendency to tip away from the driver while the edge of the head rests against it. Vhen the driver is raised, the friction or drag between the head of the nail and the driver tends to turn the shank toward the driver.

To insure, however, the proper delivery of the nail to the driver passage, the-segment plate 66 whichcarries the raceway 68 has formed upon, or attached to, its lower edge a shank-pushing and guiding projection 94 which engages the shank of the nail resting upon the ledge 70 and moves it toward a position of parallelism with the driver 21, in case it has not already been moved. into such position by the above-mentioned drag of the driver upon the nail head, and as the raceway is given its sudden movement into its lowermost position gives to the shank of the nail a sudden push toward the driver passage which has then been cleared by the upward movement of the driver.

For convenience, the segment plate 66 and its associated raceway will together be re terred to hereinafter the raceway.

The fastening container or nail pot is preferably so constructed that the nails or other tastenin'gs may readily be removed when it is desired to use ditlerent sizes or kinds, the pot 64 herein shown being provided with a door 95 pivoted at 96 upon the pot and held in eased position by a spring catch 98, a handle 100 being provided for use in opening and closing said door.

For convenience in clearing the driver passage in case a defective fastening becomes stuck in it, the section of the head 10 which includes the portion of the driver passage provided with the fastening-receiving opening is made removable, as shown at 102 in the drawings, and is held in place by a set screw 104.

As hereinabove suggested, the machine is provided with a novel edge gage, the illustrated gage cmnprising a member 1106 hav ing an edge-engaging portion and a portion extending up along the side of the head and provided with a closed slot through which passes a set screw 108 and an open slot in substantial alinement with the closed slot. and adapted-to receive a headed pin 110 upon the side of the machine head. The open slot is long entmgh to provide the desired, adjustment of the edge gage toward and from the driver passage, but is not so long as to prevent the withdrawal of the that the gage may be turned back into the dotted line position shown in Fig. 9.

Upon the other side of the head 10 is provided a novel form of gage intended to be used to aid in driving fastenings in a partitular relation to each other when they are not being driven parallel to the edge of the work. The illustrated gage comprises a straight edged member 112 having an attachi-ng portion ll't extending substantially at rigi'itranglesto the member 112 and provided with a slot 116 through which passes a set screw 118 by which the gage may be conslot from engagement with the pin 110 so upper end of said bar engages the fined in adjusted position upon the head 10. In the illustrated construction the slot 116 is of such a length that when the gage member is moved as far forward as the slot will permit it to go, the line of the lower edge of the member 112 includes the driver passage 20. The manner of using this gage is shown in Fig. 10. In this figure is shown a shoe sole into which .it is desired to drive a row of nails extending straight across the sole from side to side, and the nails are kept in alinement as they are driven successively by keeping them in line with the edge of the gage member 112. It will be seen from an inspection of the construction shown in the drawings that these gage members can be used together if desired, althoughit is usually not necessary to use'one when the other is being used. It will be understood that this feature of the invention is notrestricted to a straight edged gage member.

To prevent nails from lying across the raceway and thus clogging it and at the same time to provide a suflicient thickness to the wall of the raceway upon the side of the slot adjacent to the side of the head 10, this wall is provided above the portion on which the head of the nail rests with an upstanding portion 120 which is high enough above the other wall or side of the raceway to give to nails resting upon the two an inclination such that they will fall off when the raceway rises into fasteningdelivering position and which leaves a ledge for the head of thenail to rest upon substantially only wide enough for the overhanging part of said head.

The operation of the machine hereinabove described is as follows: A piece of work having been placed upon the horn 18, such for example as a shoe, as shown in Fig. 2 of the drawings, the operator places.

hls foot upon the forward end of the treadle lever 6 and depresses said lever, thereby through red 56 turning the lever 36 about its fulcrum and at the same time rocking the rock-shaft 38. -As the lever 36 starts to turn in a counter clockwise. direction, as viewed in Figs. 1 and 2, the driver-lifting pawl 32 will be raised, carrying with. it the driver bar 22. until the head 26 or the spring 24, when further upward movement of the driver bar 22 and driver-lifting pawl 32 will be substantially prevented by the resistance of the spring 24 until the head 10 has been. depressed, by the pull of the rod 56 upon the lever 30 and the bearing of the rock-shaft 38, into engagement with the work, such depression of the head effecting a partial compression of the spring 12.

When the work abutment surrounding the driver passage has been brought into engagement with the upper surface of the work by the depression of the head, further downward movement of the treadle lever 6 and the rod 56 will serve to lift the driver bar 22 until the tail 48 of the pawl 32 comes into engagement with the ping lug 50 upon the upstanding portion 52 of the head 10, and the pawl is turned into the dotted line position shown in Fig.

his effects a release of the driver 22 which is then depressed by the spring 24 to drive the nail delivered to the driver passage just before tl e tripping of the pawl 32.

Just as the pawl is moved out of engagement with the downwardly projecting part 30 of the driver head 26, the lever 36 comes into engagement with the pin 62 upon the upstanding portion 52 of the head 10 and the pull of the rod 56 connected with the t-readle lever 6 is then exerted directly upon the head 10 so that the head is held in engagement with the work during the nail-driving operation. The nail delivered to the driver passage during this driving operation is one which has been left upon the nail ledge after the treadle lever 6 has been released following the previous naildriving operation.

\Vhen the treadle lever raise the driver bar 22 in advance of the nail-driving operation, the raceway will be oscillated through its connections with the rock-shaft 38 into its nail-receiving position and, as hereinbefore described, the last part of this movement into nail-receiving position just as the driver rises above the nailsupporting ledge will be effected quickly so that the raceway is brought suddenly int-o cont-act with the solid portion of the is depressed to .head surrounding the driver passage and acts to ]ar the nail off the ledge, the projection 94 upon the raceway serving to guide and push the nail into the driver passage with its point downward.

After the nail or other fastening has been dI'l"e11 and the treadle has been released. the' raceway will be moved into its nail-delivering position and the endmost .nail of those picked up by it will slide down upon the ledge 70 into contact with the driver which is now in its lowermost position. If it is desired to drive no more nails at this time, the work can conveniently be removed.

f itis desired to drive another, or other, nails, the work can be moved over the horn to bring the part into which the next nail is to be inserted beneath the driver passage. The raceway will remain in its nailaleliw ering position until the treadle is again do pressed to raise the driver for the next naildriving operation.

It will be noted that many features of the construction of the machine herein disclosed are common to this machine and to the ma chine disclosed in my co-pending application Ser. No. 488,031, filed April 5, 1909, which matured into Letters Patent No. 1,033,313, granted July 23. 1912. All of the common patcntable subject-matter of these two applications has been claimed in said Letters Patent and the present application has been restricted, to features of construe tion patenlably distinguish-d from the dis closure in said Letters alcnt.

Having described my invention, what I claim as new and desire to secure. by Letters Patent of the United States is:

1. In a. machine of the class described, the combination with a head provided with a driver passage, a driver, and a raceway piv oted to oscillate between a fastening receiving position and a fastening delivering pr sition, of .a fastening receiving ledge of such dimensions that it can receive a single fasteuing only from said raceway when said raceway is in fastening delivering position, said ledge being so located and so shaped that it will transfer said fastening into the driver passage when said passage has been cleared to receive said fastening.

2. A machine of the class described, having, in combination, a head provided with a. driver passage, a stationary fastening container ca-rrieijl by said head, a stationary fasteningsustaining ledge adjacent to, and inclined toward, said driver passage, said ledge being constructed to receive and sup port by its head a single fastening only, and means for taking said single fastening from said container and depositing it upon said ledge.

3. A machine of the class described, having, in combination. a fastening raceway movable betwmn a fasteningreceiving and a fastening-delivering position, and means for moving said raceway constructed and arranged to complete suddenly the move ment of aid raceway into one of the beforementioned positions as it approaches said position.

4. A machine of the class described, having, in con'ibinat-ion, a head provided with a driver passage, a driver and a raceway pivoted to oscillate between a lastenirig-receiving' posit-ion and a fastening-(.lelivcring posilion and arranged to be moved into fastening-delivering position when the driver is in its lowermost position and to be moved into fastening-rcceiving position as the driver is moved into its uppern'iost position, and means for effecting an oscillation of said ra'iceway constructml to impart to said raceway a short, quick movement as it comes unto l'aslcningremaiving position.

5. A marhir-ie of, the class described, having, in -.-.oml' ination. a raceway movable between a fastenirig-receiving and a fastening de i ering position, means for etl'ectin; a gradual woven-rent of said raceway to within a short distance of one of said positions comprising elastic means through which the moving force is transmitted to said raccwav. means for checking the movement of said elastic means without checking the application of force to it whereby it. is put undcr tension, and means for relasing the stored-up energy in said elasti means whereby the movement of said raceway into the before-mentioncd position is completed suddenly.

6. A machine of the class described, hav ing, in combination, a head provided with a driver passage, a fastening sustaining ledge adjacent to and inclined toward said driver passage, a driver, means separate from said ledge movableinto and out of 1'. position in which it adapted to deposit a fastening upon said ledge, and means for moving the shank of said fastening toward a position of parallelism with respect to the driver as said fastening moves into the driver passage.

7 A machine of the class described, having, in combination, a head provided with a driver passage, a fastening sustaining ledge adjacent. to and inclined toward said driver passage, a driver, means separate from said ledge movable into and out of a position in which it is adapted to deposita fastening upon said ledge with its head in engagement with the driver, and means for moving the shank of sai fastening toward at position of parallelism with respect to the dri ar while the head of the fasted ing is still in engagement with the driver.

A machine of the class described, hav ing. in combinathin, a head provided with a driver passage. :1 driver, mean for reciprocating said driver to effect a fastening driving operation, a fastening sustaining ledge adjacent to and inclined toward said driver passage. means separate from said ledge movable into and out of a position in which it is ada iilrd to deposit a fastening upon said ledge with its head in engagement with the driver. and in ans operating as the driver is raised to permit the fastening to enter the driver passage for giving to said fastening a push toward said passage.

t. A machine of the class desribed, hav" ing, in conibiimtion, a head provided with a driver passage having a lastening-1'ecciving opening in one side, a driver, a fasten ing-retaining ledge adjacent to said fastoning-receiving opening, a raceway piv oted to oscillate between a fasN-niug-receiv ing position and a ftlfiltflllhg' llt'li ll' llg position and provided with means for pushing the shank of a. fastening supported on said ledge into the driver passage just before the descent of the driver.

10. A machine of the class described. hava ing, in combination, a head provided with a driver passage, a stationary fastening-sustaming ledge adpicent to and inclined toward said passage said ledge being adapted to sustain a single fastening only, means for lifting and depositing a fastening upon said ledge and means for jarring said fastening into the driver passage.

11. A machine of the class described, having, in combination, a head provided with a driver passage having a fastening receiving opening in one side, a driver, a fastening sustaining ledge adjacent to said fastening receiving opening, means separate from said ledge movable into and out of a posi tion in which it is adapted to deposit a fastening upon said ledge, means for pushing the shank of the fastening sustained on said ledge toward the driver passage, and means for operating said shank pushing means constructed to impart to said means a shortquick stroke.

12. A machine of the class described, having, -in combination, a head provided With a driver passage, a fastening sustaining ledge adjacent to and inclined toward said driver passage, a driver, and means separate from said ledge movable into and out of a position in Which it is adapted to deposit a fastening upon said ledge with its head resting against the driver.

13. A machine of the class described, having, in combination, a head provided with a driver passage, a stationary fastening-sus taining'ledge adjacent to, and inclined toward, said driver passage, and separate means for delivering fastenings singly to said ledge, said head being so constructed that a section thereof containing a portion of the driver pas age and carrying Said ledge may be removed.

it, In a machine of the class described, the combination n ith a piv ted head yieldinglv niaintainml normally it its uppermost position and provided with a driver passage, of a spring-pressed 'driver mounted upon said head, and means for lifting said driver so connected to said head that it effects an initial depression of the head and then a lifting of the driver.

15. A machine of the class described, having, in eonil' ination, a work support and a head movable relatively to each other into work-clamping relation and maintained yieldingly normally in a work receiving rotation. a spring-inq elled driver, and means for lifting said driver against the tension of the spring constructed to effect through the resistance of said spring a relative movement of said head and said work support into \vorlt-clan'iping relation.

16. A machine of the class described, haw in combination. a work supp rt and a i ing,

head movable r'cnttifoty' to each other, fit- 1 toningui'iscrting in: us '.,'1lil';0ti bv Said head and manually operated means for effecting a relative movement of said work support and head into work-clamping relation to each other and simultaneously a relative movement of said fastenin -inserting mechanism and said head in a different direction.

17. A machine of the class described, having, in combination, a work support, a head movable toward and away from said work support and provided with a driver passage, a driver mounted to reciprocate in said passage, driver-operating means mounted upon said head, and means for actuating said driver-operating means constructed to efiect a preliminary movement of the head toward the work support.

18. A machine of the class described, having, in combination, a pivoted head yieldingly maintained normally in its uppermost position and provided with a driver passage, a spring-pressed driver mounted upon said head to reciprocate in said driver passage, a treadle and connections between said treadle and said head constructed and arranged to effect a lifting of said driver and an initial depression of said head.

19. A machine of the class described, having, in combination, a pivoted head. yieldingly maintained normally in its uppermost position and provided with a driver passage, :1 driver mounted upon said head to reciprocate in said passage, a spring for imparting to said driver its driving momentum and a driver-lifting lever fulcrumcd upon said head between the driver passage and the pivot of said head whereby when one end of the lever is depressed to cause the other end to lift the driver the head will first be depressed into contact with the work.

20. A machine of the class described, having, in combination, a movable head yieldingly maintained normally in its uppermost position, a fastening driver mounted in said head and a driver spring also carried by said head, and means for lifting said driver against the tension of its spring so mounted upon said head that the force necessary to overcome the resistance of the spring to the lifting of the driver effects through said means a depression of the head.

21. A machine of the class described, 'having. in combination, a pivoted head, a spring maintaining said head normally in its uppermost position, a drive 'and driver-aetuatin s irino' carried bv said head and means for lifting said driver comprising a lever fulcrumed upon said head between its pivot and said driver, whereby the resistance of the driver spring to the lifting of the driver effect on initial depression of the head and :i mnipression of the spring which niaintains it normally in its uppermost position.

22. A machine of the cla described. ha v ing, in combination, a work support, and a bead provided with a driver passage and In testimony whereof I have signed my movable relatively tosaid work support into nani to this specification in the presence of 10 work-clamping relation thereto, manually two subscribing witnesses,

operated means for effecting such relative GEORGE GODDU movement, a driver and a, spring for actuating said driver arranged to be held out Nit-messes: of actuating relation to said dr1v er during H. Donsm' SPENCER,

v the last part of the driving movement. I ARTHUR L. RUSSELL. 

